From the course: Threat Modeling: Information Disclosure in Depth
Join today to access over 22,600 courses taught by industry experts or purchase this course individually.
Radios: Intentional and accidental
From the course: Threat Modeling: Information Disclosure in Depth
Radios: Intentional and accidental
- [Instructor] If you're old enough to remember a microwave oven interfering with your TV reception, and if you think about all the ways that things emit energy, then you have a good idea of the energy that a receiver can use to learn about what that thing is doing. Beyond radio waves, there sound, there's heat, and everything technological emits all of those when it's turned on. And that turning on brings us to the far side of the equation. All computers use energy, and if you can measure that energy input, you can learn about the computation that's happening. People have recovered cryptographic keys by listening to the CPU with a built-in microphone, by carefully measuring the power coming in, and by timing of packets. Typing different letters takes different amounts of time, and that time information is transmitted by keyboard noise. It's crazy enough to make you line your rooms with tinfoil, power them with batteries,…
Download courses and learn on the go
Watch courses on your mobile device without an internet connection. Download courses using your iOS or Android LinkedIn Learning app.